The term filterable viruses was coined by
A. Beijerinck.
B. Iwanowsky.
C. Twort.
D. d'Herelle.
A
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An autosome is
a. a chromosome that is part of a pair that is the same in both males and females. b. a structure for transport of genetic material to the cytoplasm. c. a chromosome with a group of genes involved in autoimmune disorders. d. a region of the DNA that is self-replicating. e. a cellular body involved in autoimmune disorders.
Which of the following statements is correct?
a. Allopatric populations look different and use different resources. b. Allopatric populations look different and use the same resources. c. Allopatric populations look the same and use different resources. d. Allopatric populations look the same and use the same resources. e. Sympatric and allopatric populations both look the same and use the same resources.
Which solution has the potential to diffuse the fastest?
a. A solution with large molecules as opposed to smaller ones. b. A solution with a higher concentration of molecules as opposed to one with a lower concentration. c. A solution that is under low pressure as opposed to one under high pressure. d. A solution that is at a low temperature as opposed to one at a higher temperature. e. A solution containing a hydrophilic solute as opposed to a salt.
The protozoan that causes malaria is an intracellular parasite of red blood cells (RBCs). An adaptive immune response to this parasite is problematic because
A) red blood cells do not produce MHC and, therefore, do not display the fact that they have been infected by presenting antigen. B) the parasite damages leukocytes along with RBCs. C) RBCs normally produce cytokines necessary for adaptive immune response, which this infection prevents. D) complement cannot effectively destroy RBCs. E) RBCs never enter lymphoid tissue.